solve in the brackets first. then the rest so...
8{[(7+4)2]-[(11-7)4]} <-- this is the starting equation
8{[(11)2]-[(4)4]} <-- here i solved the inner most brackets which was 7+4 and 11-7
8{[22]-[16]} <-- then i multiplied 11 by 2 to get 22 and 4 by 4 to get 16
8{6} <-- here i subtracted 16 from 22 to get 6
48 < and then the answer which i got by multiplying 6 and 8
**note: keep BEDMAS/BODMAS in your mind. u solve the inner most brackets first and then you move outside.
48 is the answer
hope it helped :)